On nrl.com, advertising and tracking add ≈ 27,444 g CO₂ per million pageviews (15,410 g from ad-serving alone) — 5.2× the index average, cleaner than 3% of the sites we measure.
Ad-relevant
27444
g CO₂ / 1M pageviews
Ad-serving only
15410
g CO₂ / 1M pageviews
329
kg CO₂ / year at 1M pageviews per month
3
% cleaner than the DACH index
44
% of the footprint is tracking overhead, not ad-serving
Measured on the live electricity grid from public page-load data — an estimate of a site's ad-tech architecture, not a measured campaign figure. See the methodology →